drivers/net/sfc/falcon_boards.c

   1 /****************************************************************************
   2  * Driver for Solarflare Solarstorm network controllers and boards
   3  * Copyright 2007-2008 Solarflare Communications Inc.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 as published
   7  * by the Free Software Foundation, incorporated herein by reference.
   8  */
   9
  10 #include <linux/rtnetlink.h>
  11
  12 #include "net_driver.h"
  13 #include "phy.h"
  14 #include "boards.h"
  15 #include "efx.h"
  16 #include "falcon.h"
  17 #include "falcon_hwdefs.h"
  18 #include "falcon_io.h"
  19 #include "workarounds.h"
  20
  21 /* Macros for unpacking the board revision */
  22 /* The revision info is in host byte order. */
  23 #define FALCON_BOARD_TYPE(_rev) (_rev >> 8)
  24 #define FALCON_BOARD_MAJOR(_rev) ((_rev >> 4) & 0xf)
  25 #define FALCON_BOARD_MINOR(_rev) (_rev & 0xf)
  26
  27 /* Board types */
  28 #define FALCON_BOARD_SFE4001 0x01
  29 #define FALCON_BOARD_SFE4002 0x02
  30 #define FALCON_BOARD_SFN4111T 0x51
  31 #define FALCON_BOARD_SFN4112F 0x52
  32
  33 /* Blink support. If the PHY has no auto-blink mode so we hang it off a timer */
  34 #define BLINK_INTERVAL (HZ/2)
  35
  36 static void blink_led_timer(unsigned long context)
  37 {
  38         struct efx_nic *efx = (struct efx_nic *)context;
  39         struct efx_blinker *bl = &efx->board_info.blinker;
  40         efx->board_info.set_id_led(efx, bl->state);
  41         bl->state = !bl->state;
  42         if (bl->resubmit)
  43                 mod_timer(&bl->timer, jiffies + BLINK_INTERVAL);
  44 }
  45
  46 static void board_blink(struct efx_nic *efx, bool blink)
  47 {
  48         struct efx_blinker *blinker = &efx->board_info.blinker;
  49
  50         /* The rtnl mutex serialises all ethtool ioctls, so
  51          * nothing special needs doing here. */
  52         if (blink) {
  53                 blinker->resubmit = true;
  54                 blinker->state = false;
  55                 setup_timer(&blinker->timer, blink_led_timer,
  56                             (unsigned long)efx);
  57                 mod_timer(&blinker->timer, jiffies + BLINK_INTERVAL);
  58         } else {
  59                 blinker->resubmit = false;
  60                 if (blinker->timer.function)
  61                         del_timer_sync(&blinker->timer);
  62                 efx->board_info.init_leds(efx);
  63         }
  64 }
  65
  66 /*****************************************************************************
  67  * Support for LM87 sensor chip used on several boards
  68  */
  69 #define LM87_REG_ALARMS1                0x41
  70 #define LM87_REG_ALARMS2                0x42
  71 #define LM87_IN_LIMITS(nr, _min, _max)                  \
  72         0x2B + (nr) * 2, _max, 0x2C + (nr) * 2, _min
  73 #define LM87_AIN_LIMITS(nr, _min, _max)                 \
  74         0x3B + (nr), _max, 0x1A + (nr), _min
  75 #define LM87_TEMP_INT_LIMITS(_min, _max)                \
  76         0x39, _max, 0x3A, _min
  77 #define LM87_TEMP_EXT1_LIMITS(_min, _max)               \
  78         0x37, _max, 0x38, _min
  79
  80 #define LM87_ALARM_TEMP_INT             0x10
  81 #define LM87_ALARM_TEMP_EXT1            0x20
  82
  83 #if defined(CONFIG_SENSORS_LM87) || defined(CONFIG_SENSORS_LM87_MODULE)
  84
  85 static int efx_init_lm87(struct efx_nic *efx, struct i2c_board_info *info,
  86                          const u8 *reg_values)
  87 {
  88         struct i2c_client *client = i2c_new_device(&efx->i2c_adap, info);
  89         int rc;
  90
  91         if (!client)
  92                 return -EIO;
  93
  94         while (*reg_values) {
  95                 u8 reg = *reg_values++;
  96                 u8 value = *reg_values++;
  97                 rc = i2c_smbus_write_byte_data(client, reg, value);
  98                 if (rc)
  99                         goto err;
 100         }
 101
 102         efx->board_info.hwmon_client = client;
 103         return 0;
 104
 105 err:
 106         i2c_unregister_device(client);
 107         return rc;
 108 }
 109
 110 static void efx_fini_lm87(struct efx_nic *efx)
 111 {
 112         i2c_unregister_device(efx->board_info.hwmon_client);
 113 }
 114
 115 static int efx_check_lm87(struct efx_nic *efx, unsigned mask)
 116 {
 117         struct i2c_client *client = efx->board_info.hwmon_client;
 118         s32 alarms1, alarms2;
 119
 120         /* If link is up then do not monitor temperature */
 121         if (EFX_WORKAROUND_7884(efx) && efx->link_up)
 122                 return 0;
 123
 124         alarms1 = i2c_smbus_read_byte_data(client, LM87_REG_ALARMS1);
 125         alarms2 = i2c_smbus_read_byte_data(client, LM87_REG_ALARMS2);
 126         if (alarms1 < 0)
 127                 return alarms1;
 128         if (alarms2 < 0)
 129                 return alarms2;
 130         alarms1 &= mask;
 131         alarms2 &= mask >> 8;
 132         if (alarms1 || alarms2) {
 133                 EFX_ERR(efx,
 134                         "LM87 detected a hardware failure (status %02x:%02x)"
 135                         "%s%s\n",
 136                         alarms1, alarms2,
 137                         (alarms1 & LM87_ALARM_TEMP_INT) ? " INTERNAL" : "",
 138                         (alarms1 & LM87_ALARM_TEMP_EXT1) ? " EXTERNAL" : "");
 139                 return -ERANGE;
 140         }
 141
 142         return 0;
 143 }
 144
 145 #else /* !CONFIG_SENSORS_LM87 */
 146
 147 static inline int
 148 efx_init_lm87(struct efx_nic *efx, struct i2c_board_info *info,
 149               const u8 *reg_values)
 150 {
 151         return 0;
 152 }
 153 static inline void efx_fini_lm87(struct efx_nic *efx)
 154 {
 155 }
 156 static inline int efx_check_lm87(struct efx_nic *efx, unsigned mask)
 157 {
 158         return 0;
 159 }
 160
 161 #endif /* CONFIG_SENSORS_LM87 */
 162
 163 /*****************************************************************************
 164  * Support for the SFE4001 and SFN4111T NICs.
 165  *
 166  * The SFE4001 does not power-up fully at reset due to its high power
 167  * consumption.  We control its power via a PCA9539 I/O expander.
 168  * Both boards have a MAX6647 temperature monitor which we expose to
 169  * the lm90 driver.
 170  *
 171  * This also provides minimal support for reflashing the PHY, which is
 172  * initiated by resetting it with the FLASH_CFG_1 pin pulled down.
 173  * On SFE4001 rev A2 and later this is connected to the 3V3X output of
 174  * the IO-expander; on the SFN4111T it is connected to Falcon's GPIO3.
 175  * We represent reflash mode as PHY_MODE_SPECIAL and make it mutually
 176  * exclusive with the network device being open.
 177  */
 178
 179 /**************************************************************************
 180  * Support for I2C IO Expander device on SFE40001
 181  */
 182 #define PCA9539 0x74
 183
 184 #define P0_IN 0x00
 185 #define P0_OUT 0x02
 186 #define P0_INVERT 0x04
 187 #define P0_CONFIG 0x06
 188
 189 #define P0_EN_1V0X_LBN 0
 190 #define P0_EN_1V0X_WIDTH 1
 191 #define P0_EN_1V2_LBN 1
 192 #define P0_EN_1V2_WIDTH 1
 193 #define P0_EN_2V5_LBN 2
 194 #define P0_EN_2V5_WIDTH 1
 195 #define P0_EN_3V3X_LBN 3
 196 #define P0_EN_3V3X_WIDTH 1
 197 #define P0_EN_5V_LBN 4
 198 #define P0_EN_5V_WIDTH 1
 199 #define P0_SHORTEN_JTAG_LBN 5
 200 #define P0_SHORTEN_JTAG_WIDTH 1
 201 #define P0_X_TRST_LBN 6
 202 #define P0_X_TRST_WIDTH 1
 203 #define P0_DSP_RESET_LBN 7
 204 #define P0_DSP_RESET_WIDTH 1
 205
 206 #define P1_IN 0x01
 207 #define P1_OUT 0x03
 208 #define P1_INVERT 0x05
 209 #define P1_CONFIG 0x07
 210
 211 #define P1_AFE_PWD_LBN 0
 212 #define P1_AFE_PWD_WIDTH 1
 213 #define P1_DSP_PWD25_LBN 1
 214 #define P1_DSP_PWD25_WIDTH 1
 215 #define P1_RESERVED_LBN 2
 216 #define P1_RESERVED_WIDTH 2
 217 #define P1_SPARE_LBN 4
 218 #define P1_SPARE_WIDTH 4
 219
 220 /* Temperature Sensor */
 221 #define MAX664X_REG_RSL         0x02
 222 #define MAX664X_REG_WLHO        0x0B
 223
 224 static void sfe4001_poweroff(struct efx_nic *efx)
 225 {
 226         struct i2c_client *ioexp_client = efx->board_info.ioexp_client;
 227         struct i2c_client *hwmon_client = efx->board_info.hwmon_client;
 228
 229         /* Turn off all power rails and disable outputs */
 230         i2c_smbus_write_byte_data(ioexp_client, P0_OUT, 0xff);
 231         i2c_smbus_write_byte_data(ioexp_client, P1_CONFIG, 0xff);
 232         i2c_smbus_write_byte_data(ioexp_client, P0_CONFIG, 0xff);
 233
 234         /* Clear any over-temperature alert */
 235         i2c_smbus_read_byte_data(hwmon_client, MAX664X_REG_RSL);
 236 }
 237
 238 static int sfe4001_poweron(struct efx_nic *efx)
 239 {
 240         struct i2c_client *hwmon_client = efx->board_info.hwmon_client;
 241         struct i2c_client *ioexp_client = efx->board_info.ioexp_client;
 242         unsigned int i, j;
 243         int rc;
 244         u8 out;
 245
 246         /* Clear any previous over-temperature alert */
 247         rc = i2c_smbus_read_byte_data(hwmon_client, MAX664X_REG_RSL);
 248         if (rc < 0)
 249                 return rc;
 250
 251         /* Enable port 0 and port 1 outputs on IO expander */
 252         rc = i2c_smbus_write_byte_data(ioexp_client, P0_CONFIG, 0x00);
 253         if (rc)
 254                 return rc;
 255         rc = i2c_smbus_write_byte_data(ioexp_client, P1_CONFIG,
 256                                        0xff & ~(1 << P1_SPARE_LBN));
 257         if (rc)
 258                 goto fail_on;
 259
 260         /* If PHY power is on, turn it all off and wait 1 second to
 261          * ensure a full reset.
 262          */
 263         rc = i2c_smbus_read_byte_data(ioexp_client, P0_OUT);
 264         if (rc < 0)
 265                 goto fail_on;
 266         out = 0xff & ~((0 << P0_EN_1V2_LBN) | (0 << P0_EN_2V5_LBN) |
 267                        (0 << P0_EN_3V3X_LBN) | (0 << P0_EN_5V_LBN) |
 268                        (0 << P0_EN_1V0X_LBN));
 269         if (rc != out) {
 270                 EFX_INFO(efx, "power-cycling PHY\n");
 271                 rc = i2c_smbus_write_byte_data(ioexp_client, P0_OUT, out);
 272                 if (rc)
 273                         goto fail_on;
 274                 schedule_timeout_uninterruptible(HZ);
 275         }
 276
 277         for (i = 0; i < 20; ++i) {
 278                 /* Turn on 1.2V, 2.5V, 3.3V and 5V power rails */
 279                 out = 0xff & ~((1 << P0_EN_1V2_LBN) | (1 << P0_EN_2V5_LBN) |
 280                                (1 << P0_EN_3V3X_LBN) | (1 << P0_EN_5V_LBN) |
 281                                (1 << P0_X_TRST_LBN));
 282                 if (efx->phy_mode & PHY_MODE_SPECIAL)
 283                         out |= 1 << P0_EN_3V3X_LBN;
 284
 285                 rc = i2c_smbus_write_byte_data(ioexp_client, P0_OUT, out);
 286                 if (rc)
 287                         goto fail_on;
 288                 msleep(10);
 289
 290                 /* Turn on 1V power rail */
 291                 out &= ~(1 << P0_EN_1V0X_LBN);
 292                 rc = i2c_smbus_write_byte_data(ioexp_client, P0_OUT, out);
 293                 if (rc)
 294                         goto fail_on;
 295
 296                 EFX_INFO(efx, "waiting for DSP boot (attempt %d)...\n", i);
 297
 298                 /* In flash config mode, DSP does not turn on AFE, so
 299                  * just wait 1 second.
 300                  */
 301                 if (efx->phy_mode & PHY_MODE_SPECIAL) {
 302                         schedule_timeout_uninterruptible(HZ);
 303                         return 0;
 304                 }
 305
 306                 for (j = 0; j < 10; ++j) {
 307                         msleep(100);
 308
 309                         /* Check DSP has asserted AFE power line */
 310                         rc = i2c_smbus_read_byte_data(ioexp_client, P1_IN);
 311                         if (rc < 0)
 312                                 goto fail_on;
 313                         if (rc & (1 << P1_AFE_PWD_LBN))
 314                                 return 0;
 315                 }
 316         }
 317
 318         EFX_INFO(efx, "timed out waiting for DSP boot\n");
 319         rc = -ETIMEDOUT;
 320 fail_on:
 321         sfe4001_poweroff(efx);
 322         return rc;
 323 }
 324
 325 static int sfn4111t_reset(struct efx_nic *efx)
 326 {
 327         efx_oword_t reg;
 328
 329         /* GPIO 3 and the GPIO register are shared with I2C, so block that */
 330         mutex_lock(&efx->i2c_adap.bus_lock);
 331
 332         /* Pull RST_N (GPIO 2) low then let it up again, setting the
 333          * FLASH_CFG_1 strap (GPIO 3) appropriately.  Only change the
 334          * output enables; the output levels should always be 0 (low)
 335          * and we rely on external pull-ups. */
 336         falcon_read(efx, &reg, GPIO_CTL_REG_KER);
 337         EFX_SET_OWORD_FIELD(reg, GPIO2_OEN, true);
 338         falcon_write(efx, &reg, GPIO_CTL_REG_KER);
 339         msleep(1000);
 340         EFX_SET_OWORD_FIELD(reg, GPIO2_OEN, false);
 341         EFX_SET_OWORD_FIELD(reg, GPIO3_OEN,
 342                             !!(efx->phy_mode & PHY_MODE_SPECIAL));
 343         falcon_write(efx, &reg, GPIO_CTL_REG_KER);
 344         msleep(1);
 345
 346         mutex_unlock(&efx->i2c_adap.bus_lock);
 347
 348         ssleep(1);
 349         return 0;
 350 }
 351
 352 static ssize_t show_phy_flash_cfg(struct device *dev,
 353                                   struct device_attribute *attr, char *buf)
 354 {
 355         struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev));
 356         return sprintf(buf, "%d\n", !!(efx->phy_mode & PHY_MODE_SPECIAL));
 357 }
 358
 359 static ssize_t set_phy_flash_cfg(struct device *dev,
 360                                  struct device_attribute *attr,
 361                                  const char *buf, size_t count)
 362 {
 363         struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev));
 364         enum efx_phy_mode old_mode, new_mode;
 365         int err;
 366
 367         rtnl_lock();
 368         old_mode = efx->phy_mode;
 369         if (count == 0 || *buf == '0')
 370                 new_mode = old_mode & ~PHY_MODE_SPECIAL;
 371         else
 372                 new_mode = PHY_MODE_SPECIAL;
 373         if (old_mode == new_mode) {
 374                 err = 0;
 375         } else if (efx->state != STATE_RUNNING || netif_running(efx->net_dev)) {
 376                 err = -EBUSY;
 377         } else {
 378                 /* Reset the PHY, reconfigure the MAC and enable/disable
 379                  * MAC stats accordingly. */
 380                 efx->phy_mode = new_mode;
 381                 if (new_mode & PHY_MODE_SPECIAL)
 382                         efx_stats_disable(efx);
 383                 if (efx->board_info.type == FALCON_BOARD_SFE4001)
 384                         err = sfe4001_poweron(efx);
 385                 else
 386                         err = sfn4111t_reset(efx);
 387                 efx_reconfigure_port(efx);
 388                 if (!(new_mode & PHY_MODE_SPECIAL))
 389                         efx_stats_enable(efx);
 390         }
 391         rtnl_unlock();
 392
 393         return err ? err : count;
 394 }
 395
 396 static DEVICE_ATTR(phy_flash_cfg, 0644, show_phy_flash_cfg, set_phy_flash_cfg);
 397
 398 static void sfe4001_fini(struct efx_nic *efx)
 399 {
 400         EFX_INFO(efx, "%s\n", __func__);
 401
 402         device_remove_file(&efx->pci_dev->dev, &dev_attr_phy_flash_cfg);
 403         sfe4001_poweroff(efx);
 404         i2c_unregister_device(efx->board_info.ioexp_client);
 405         i2c_unregister_device(efx->board_info.hwmon_client);
 406 }
 407
 408 static int sfe4001_check_hw(struct efx_nic *efx)
 409 {
 410         s32 status;
 411
 412         /* If XAUI link is up then do not monitor */
 413         if (EFX_WORKAROUND_7884(efx) && efx->mac_up)
 414                 return 0;
 415
 416         /* Check the powered status of the PHY. Lack of power implies that
 417          * the MAX6647 has shut down power to it, probably due to a temp.
 418          * alarm. Reading the power status rather than the MAX6647 status
 419          * directly because the later is read-to-clear and would thus
 420          * start to power up the PHY again when polled, causing us to blip
 421          * the power undesirably.
 422          * We know we can read from the IO expander because we did
 423          * it during power-on. Assume failure now is bad news. */
 424         status = i2c_smbus_read_byte_data(efx->board_info.ioexp_client, P1_IN);
 425         if (status >= 0 &&
 426             (status & ((1 << P1_AFE_PWD_LBN) | (1 << P1_DSP_PWD25_LBN))) != 0)
 427                 return 0;
 428
 429         /* Use board power control, not PHY power control */
 430         sfe4001_poweroff(efx);
 431         efx->phy_mode = PHY_MODE_OFF;
 432
 433         return (status < 0) ? -EIO : -ERANGE;
 434 }
 435
 436 static struct i2c_board_info sfe4001_hwmon_info = {
 437         I2C_BOARD_INFO("max6647", 0x4e),
 438 };
 439
 440 /* This board uses an I2C expander to provider power to the PHY, which needs to
 441  * be turned on before the PHY can be used.
 442  * Context: Process context, rtnl lock held
 443  */
 444 static int sfe4001_init(struct efx_nic *efx)
 445 {
 446         int rc;
 447
 448 #if defined(CONFIG_SENSORS_LM90) || defined(CONFIG_SENSORS_LM90_MODULE)
 449         efx->board_info.hwmon_client =
 450                 i2c_new_device(&efx->i2c_adap, &sfe4001_hwmon_info);
 451 #else
 452         efx->board_info.hwmon_client =
 453                 i2c_new_dummy(&efx->i2c_adap, sfe4001_hwmon_info.addr);
 454 #endif
 455         if (!efx->board_info.hwmon_client)
 456                 return -EIO;
 457
 458         /* Raise board/PHY high limit from 85 to 90 degrees Celsius */
 459         rc = i2c_smbus_write_byte_data(efx->board_info.hwmon_client,
 460                                        MAX664X_REG_WLHO, 90);
 461         if (rc)
 462                 goto fail_hwmon;
 463
 464         efx->board_info.ioexp_client = i2c_new_dummy(&efx->i2c_adap, PCA9539);
 465         if (!efx->board_info.ioexp_client) {
 466                 rc = -EIO;
 467                 goto fail_hwmon;
 468         }
 469
 470         /* 10Xpress has fixed-function LED pins, so there is no board-specific
 471          * blink code. */
 472         efx->board_info.blink = tenxpress_phy_blink;
 473
 474         efx->board_info.monitor = sfe4001_check_hw;
 475         efx->board_info.fini = sfe4001_fini;
 476
 477         if (efx->phy_mode & PHY_MODE_SPECIAL) {
 478                 /* PHY won't generate a 156.25 MHz clock and MAC stats fetch
 479                  * will fail. */
 480                 efx_stats_disable(efx);
 481         }
 482         rc = sfe4001_poweron(efx);
 483         if (rc)
 484                 goto fail_ioexp;
 485
 486         rc = device_create_file(&efx->pci_dev->dev, &dev_attr_phy_flash_cfg);
 487         if (rc)
 488                 goto fail_on;
 489
 490         EFX_INFO(efx, "PHY is powered on\n");
 491         return 0;
 492
 493 fail_on:
 494         sfe4001_poweroff(efx);
 495 fail_ioexp:
 496         i2c_unregister_device(efx->board_info.ioexp_client);
 497 fail_hwmon:
 498         i2c_unregister_device(efx->board_info.hwmon_client);
 499         return rc;
 500 }
 501
 502 static int sfn4111t_check_hw(struct efx_nic *efx)
 503 {
 504         s32 status;
 505
 506         /* If XAUI link is up then do not monitor */
 507         if (EFX_WORKAROUND_7884(efx) && efx->mac_up)
 508                 return 0;
 509
 510         /* Test LHIGH, RHIGH, FAULT, EOT and IOT alarms */
 511         status = i2c_smbus_read_byte_data(efx->board_info.hwmon_client,
 512                                           MAX664X_REG_RSL);
 513         if (status < 0)
 514                 return -EIO;
 515         if (status & 0x57)
 516                 return -ERANGE;
 517         return 0;
 518 }
 519
 520 static void sfn4111t_fini(struct efx_nic *efx)
 521 {
 522         EFX_INFO(efx, "%s\n", __func__);
 523
 524         device_remove_file(&efx->pci_dev->dev, &dev_attr_phy_flash_cfg);
 525         i2c_unregister_device(efx->board_info.hwmon_client);
 526 }
 527
 528 static struct i2c_board_info sfn4111t_a0_hwmon_info = {
 529         I2C_BOARD_INFO("max6647", 0x4e),
 530 };
 531
 532 static struct i2c_board_info sfn4111t_r5_hwmon_info = {
 533         I2C_BOARD_INFO("max6646", 0x4d),
 534 };
 535
 536 static int sfn4111t_init(struct efx_nic *efx)
 537 {
 538         int i = 0;
 539         int rc;
 540
 541         efx->board_info.hwmon_client =
 542                 i2c_new_device(&efx->i2c_adap,
 543                                (efx->board_info.minor < 5) ?
 544                                &sfn4111t_a0_hwmon_info :
 545                                &sfn4111t_r5_hwmon_info);
 546         if (!efx->board_info.hwmon_client)
 547                 return -EIO;
 548
 549         efx->board_info.blink = tenxpress_phy_blink;
 550         efx->board_info.monitor = sfn4111t_check_hw;
 551         efx->board_info.fini = sfn4111t_fini;
 552
 553         rc = device_create_file(&efx->pci_dev->dev, &dev_attr_phy_flash_cfg);
 554         if (rc)
 555                 goto fail_hwmon;
 556
 557         do {
 558                 if (efx->phy_mode & PHY_MODE_SPECIAL) {
 559                         /* PHY may not generate a 156.25 MHz clock and MAC
 560                          * stats fetch will fail. */
 561                         efx_stats_disable(efx);
 562                         sfn4111t_reset(efx);
 563                 }
 564                 rc = sft9001_wait_boot(efx);
 565                 if (rc == 0)
 566                         return 0;
 567                 efx->phy_mode = PHY_MODE_SPECIAL;
 568         } while (rc == -EINVAL && ++i < 2);
 569
 570         device_remove_file(&efx->pci_dev->dev, &dev_attr_phy_flash_cfg);
 571 fail_hwmon:
 572         i2c_unregister_device(efx->board_info.hwmon_client);
 573         return rc;
 574 }
 575
 576 /*****************************************************************************
 577  * Support for the SFE4002
 578  *
 579  */
 580 static u8 sfe4002_lm87_channel = 0x03; /* use AIN not FAN inputs */
 581
 582 static const u8 sfe4002_lm87_regs[] = {
 583         LM87_IN_LIMITS(0, 0x83, 0x91),          /* 2.5V:  1.8V +/- 5% */
 584         LM87_IN_LIMITS(1, 0x51, 0x5a),          /* Vccp1: 1.2V +/- 5% */
 585         LM87_IN_LIMITS(2, 0xb6, 0xca),          /* 3.3V:  3.3V +/- 5% */
 586         LM87_IN_LIMITS(3, 0xb0, 0xc9),          /* 5V:    4.6-5.2V */
 587         LM87_IN_LIMITS(4, 0xb0, 0xe0),          /* 12V:   11-14V */
 588         LM87_IN_LIMITS(5, 0x44, 0x4b),          /* Vccp2: 1.0V +/- 5% */
 589         LM87_AIN_LIMITS(0, 0xa0, 0xb2),         /* AIN1:  1.66V +/- 5% */
 590         LM87_AIN_LIMITS(1, 0x91, 0xa1),         /* AIN2:  1.5V +/- 5% */
 591         LM87_TEMP_INT_LIMITS(10, 60),           /* board */
 592         LM87_TEMP_EXT1_LIMITS(10, 70),          /* Falcon */
 593         0
 594 };
 595
 596 static struct i2c_board_info sfe4002_hwmon_info = {
 597         I2C_BOARD_INFO("lm87", 0x2e),
 598         .platform_data  = &sfe4002_lm87_channel,
 599 };
 600
 601 /****************************************************************************/
 602 /* LED allocations. Note that on rev A0 boards the schematic and the reality
 603  * differ: red and green are swapped. Below is the fixed (A1) layout (there
 604  * are only 3 A0 boards in existence, so no real reason to make this
 605  * conditional).
 606  */
 607 #define SFE4002_FAULT_LED (2)   /* Red */
 608 #define SFE4002_RX_LED    (0)   /* Green */
 609 #define SFE4002_TX_LED    (1)   /* Amber */
 610
 611 static void sfe4002_init_leds(struct efx_nic *efx)
 612 {
 613         /* Set the TX and RX LEDs to reflect status and activity, and the
 614          * fault LED off */
 615         xfp_set_led(efx, SFE4002_TX_LED,
 616                     QUAKE_LED_TXLINK | QUAKE_LED_LINK_ACTSTAT);
 617         xfp_set_led(efx, SFE4002_RX_LED,
 618                     QUAKE_LED_RXLINK | QUAKE_LED_LINK_ACTSTAT);
 619         xfp_set_led(efx, SFE4002_FAULT_LED, QUAKE_LED_OFF);
 620 }
 621
 622 static void sfe4002_set_id_led(struct efx_nic *efx, bool state)
 623 {
 624         xfp_set_led(efx, SFE4002_FAULT_LED, state ? QUAKE_LED_ON :
 625                         QUAKE_LED_OFF);
 626 }
 627
 628 static int sfe4002_check_hw(struct efx_nic *efx)
 629 {
 630         /* A0 board rev. 4002s report a temperature fault the whole time
 631          * (bad sensor) so we mask it out. */
 632         unsigned alarm_mask =
 633                 (efx->board_info.major == 0 && efx->board_info.minor == 0) ?
 634                 ~LM87_ALARM_TEMP_EXT1 : ~0;
 635
 636         return efx_check_lm87(efx, alarm_mask);
 637 }
 638
 639 static int sfe4002_init(struct efx_nic *efx)
 640 {
 641         int rc = efx_init_lm87(efx, &sfe4002_hwmon_info, sfe4002_lm87_regs);
 642         if (rc)
 643                 return rc;
 644         efx->board_info.monitor = sfe4002_check_hw;
 645         efx->board_info.init_leds = sfe4002_init_leds;
 646         efx->board_info.set_id_led = sfe4002_set_id_led;
 647         efx->board_info.blink = board_blink;
 648         efx->board_info.fini = efx_fini_lm87;
 649         return 0;
 650 }
 651
 652 /*****************************************************************************
 653  * Support for the SFN4112F
 654  *
 655  */
 656 static u8 sfn4112f_lm87_channel = 0x03; /* use AIN not FAN inputs */
 657
 658 static const u8 sfn4112f_lm87_regs[] = {
 659         LM87_IN_LIMITS(0, 0x83, 0x91),          /* 2.5V:  1.8V +/- 5% */
 660         LM87_IN_LIMITS(1, 0x51, 0x5a),          /* Vccp1: 1.2V +/- 5% */
 661         LM87_IN_LIMITS(2, 0xb6, 0xca),          /* 3.3V:  3.3V +/- 5% */
 662         LM87_IN_LIMITS(4, 0xb0, 0xe0),          /* 12V:   11-14V */
 663         LM87_IN_LIMITS(5, 0x44, 0x4b),          /* Vccp2: 1.0V +/- 5% */
 664         LM87_AIN_LIMITS(1, 0x91, 0xa1),         /* AIN2:  1.5V +/- 5% */
 665         LM87_TEMP_INT_LIMITS(10, 60),           /* board */
 666         LM87_TEMP_EXT1_LIMITS(10, 70),          /* Falcon */
 667         0
 668 };
 669
 670 static struct i2c_board_info sfn4112f_hwmon_info = {
 671         I2C_BOARD_INFO("lm87", 0x2e),
 672         .platform_data  = &sfn4112f_lm87_channel,
 673 };
 674
 675 #define SFN4112F_ACT_LED        0
 676 #define SFN4112F_LINK_LED       1
 677
 678 static void sfn4112f_init_leds(struct efx_nic *efx)
 679 {
 680         xfp_set_led(efx, SFN4112F_ACT_LED,
 681                     QUAKE_LED_RXLINK | QUAKE_LED_LINK_ACT);
 682         xfp_set_led(efx, SFN4112F_LINK_LED,
 683                     QUAKE_LED_RXLINK | QUAKE_LED_LINK_STAT);
 684 }
 685
 686 static void sfn4112f_set_id_led(struct efx_nic *efx, bool state)
 687 {
 688         xfp_set_led(efx, SFN4112F_LINK_LED,
 689                     state ? QUAKE_LED_ON : QUAKE_LED_OFF);
 690 }
 691
 692 static int sfn4112f_check_hw(struct efx_nic *efx)
 693 {
 694         /* Mask out unused sensors */
 695         return efx_check_lm87(efx, ~0x48);
 696 }
 697
 698 static int sfn4112f_init(struct efx_nic *efx)
 699 {
 700         int rc = efx_init_lm87(efx, &sfn4112f_hwmon_info, sfn4112f_lm87_regs);
 701         if (rc)
 702                 return rc;
 703         efx->board_info.monitor = sfn4112f_check_hw;
 704         efx->board_info.init_leds = sfn4112f_init_leds;
 705         efx->board_info.set_id_led = sfn4112f_set_id_led;
 706         efx->board_info.blink = board_blink;
 707         efx->board_info.fini = efx_fini_lm87;
 708         return 0;
 709 }
 710
 711 /* This will get expanded as board-specific details get moved out of the
 712  * PHY drivers. */
 713 struct falcon_board_data {
 714         u8 type;
 715         const char *ref_model;
 716         const char *gen_type;
 717         int (*init) (struct efx_nic *nic);
 718 };
 719
 720
 721 static struct falcon_board_data board_data[] = {
 722         { FALCON_BOARD_SFE4001, "SFE4001", "10GBASE-T adapter", sfe4001_init },
 723         { FALCON_BOARD_SFE4002, "SFE4002", "XFP adapter", sfe4002_init },
 724         { FALCON_BOARD_SFN4111T, "SFN4111T", "100/1000/10GBASE-T adapter",
 725           sfn4111t_init },
 726         { FALCON_BOARD_SFN4112F, "SFN4112F", "SFP+ adapter",
 727           sfn4112f_init },
 728 };
 729
 730 void falcon_probe_board(struct efx_nic *efx, u16 revision_info)
 731 {
 732         struct falcon_board_data *data = NULL;
 733         int i;
 734
 735         efx->board_info.type = FALCON_BOARD_TYPE(revision_info);
 736         efx->board_info.major = FALCON_BOARD_MAJOR(revision_info);
 737         efx->board_info.minor = FALCON_BOARD_MINOR(revision_info);
 738
 739         for (i = 0; i < ARRAY_SIZE(board_data); i++)
 740                 if (board_data[i].type == efx->board_info.type)
 741                         data = &board_data[i];
 742
 743         if (data) {
 744                 EFX_INFO(efx, "board is %s rev %c%d\n",
 745                          (efx->pci_dev->subsystem_vendor == EFX_VENDID_SFC)
 746                          ? data->ref_model : data->gen_type,
 747                          'A' + efx->board_info.major, efx->board_info.minor);
 748                 efx->board_info.init = data->init;
 749         } else {
 750                 EFX_ERR(efx, "unknown board type %d\n", efx->board_info.type);
 751         }
 752 }